# STC SA04550CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Alpha Aviation Inc., United States
- Description: Installation of firewall mounted Electric Fuel Transfer Pump, reroute of fuel transfer lines and removal of engine driven mechanical fuel transfer pump
- Applied: August 30, 2021
- Status date: January 13, 2022
- Product: Aircraft, Small Airplane
- Certification basis: Part 23
- Data sheets: [TCDS A-718](https://openairdocs.org/tcds/A-718), [TCDS A-787](https://openairdocs.org/tcds/A-787)
- Certificate PDF: https://openairdocs.org/files/sha256/6f/8e/6f8e955d0b4bfef4e08fb03210cca813267dab9af4aea6c5e8344d15bdb894ca
- Approved model list and other attachments: [SA04550CH_AML.pdf](https://openairdocs.org/files/sha256/22/f9/22f9a8f7966cc3f40a5b05a0261707370312f0607e358df285fa74743d36ce8e)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167673069420250307143105.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA04550CH

## ADs that name it (0)

None.

## Approved models (9)

- Univair Aircraft Corporation 415-C ([TCDS A-718](https://openairdocs.org/tcds/A-718))
- Univair Aircraft Corporation 415-CD ([TCDS A-718](https://openairdocs.org/tcds/A-718))
- Univair Aircraft Corporation 415-D ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation 415-E ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation 415-G ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation A-2 ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation A2-A ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation F-1 ([TCDS A-787](https://openairdocs.org/tcds/A-787))
- Univair Aircraft Corporation F-1A ([TCDS A-787](https://openairdocs.org/tcds/A-787))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- January 13, 2022: Issued, Current. [certificate](https://openairdocs.org/files/sha256/6f/8e/6f8e955d0b4bfef4e08fb03210cca813267dab9af4aea6c5e8344d15bdb894ca), [SA04550CH_AML.pdf](https://openairdocs.org/files/sha256/22/f9/22f9a8f7966cc3f40a5b05a0261707370312f0607e358df285fa74743d36ce8e)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.